The causality of a system was defined in section 2.2.4. From this definition, show that, for a
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The causality of a system was defined in section 2.2.4. From this definition, show that, for a linear time-invariant system, causality implies that the impulse response h[n] is zero for n < 0. One approach is to show that if h[n] is not zero n < 0, then the system cannot be causal. Show also that if the impulse response is zero for n < 0, then the system will necessarily be causal.
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Related Book For
Discrete Time Signal Processing
ISBN: 978-0137549207
2nd Edition
Authors: Alan V. Oppenheim, Rolan W. Schafer
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